package com.itheima.jobs;

import com.itheima.constant.RedisConstant;
import com.itheima.utils.QiniuUtils;
import org.springframework.beans.factory.annotation.Autowired;
import redis.clients.jedis.JedisPool;

import java.util.Set;

/**
 * 自定义job，定时清理七牛云垃圾图片
 * */
public class ClearImgJob {
    @Autowired
    private JedisPool jedisPool;
    public void clearImg(){
        //根据Redis中保存的两个set集合进行差值计算，获得垃圾图片名称集合
        Set<String> set = jedisPool.getResource().sdiff(RedisConstant.SETMEAL_PIC_RESOURCES, RedisConstant.SETMEAL_PIC_DB_RESOURCES);
        if (set!=null){
            for (String picName : set) {
                //删除七牛云的图片
                QiniuUtils.deleteFileFromQiniu(picName);
                //删除redis中的图片名称
                jedisPool.getResource().srem(RedisConstant.SETMEAL_PIC_RESOURCES,picName);
                System.out.println("删除了垃圾图片"+picName);
            }

        }else {
            System.out.println("无垃圾图片");
        }
    }
}
